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US 9,783,703 B2Granted
Adhesive compositions and use thereof
AssigneesHenkel AG & Co. KGaA, Henkel IP & Holding GmbH
InventorsRichard Ellis, Charles W. Paul, Dirk Kasper, Petra Padurschel, Andrea Eodice
Life of this patent
Estimating the term…
Abstract
The invention provides adhesives comprising at least one polymer component which contains at least 65 weight percent propylene, at least one nucleator and at least one functionalized wax. The inventive adhesives have increased heat resistance and decreased set-time, making them particularly well suited for assembly and packaging applications.
Claims16
An article comprising:
- (A) a substrate selected from kraft paper, chipboard or film;
- and
- (B) an adhesive comprising:
- 1) a polymer component which contains, in polymerized form, at least 65 wt % of propylene, based on the total weight of the polymer component;
- 2) from about 0.01 to about 1 wt % of a nucleator;
- 3) from about 0.5 to up to 5 wt % of a functionalized polypropylene wax;
- and
- 4) from 21 to about 60 wt % of a tackifier
- wherein the total weight percent of the adhesive equals to 100 wt %;
- and
- wherein the adhesive has a heat resistance of at least 5° C. greater than an adhesive without the nucleator and the functionalized polypropylene wax.
8 more elements
An article comprising:
- (A) a substrate selected from kraft paper, chipboard or film;
- and
- (B) an adhesive comprising:
- (i) a polymer blend that comprises at least one thermomechanical degraded semi-crystalline polypropylene (co)polymer and at least one thermomechanical degraded elastomeric rubber;
- (ii) from about 0.01 to about 1 wt % of a nucleator selected from the group consisting of organic acid salts, phosphoric acids, ethylene-(meth)acrylic acid ionomers, multiple amides components, sorbitols and their corresponding derivatives thereof;
- (iii) from about 0.5 to up to 5 wt % of a functionalized polypropylene wax which is a wax grafted with at least one olefinically unsaturated dicarboxylic anhydride of less than 12 carbon atoms;
- and
- (iv) from 21 to about 60 wt % of a tackifier
- wherein the total weight percent of the adhesive equals to 100 wt %;
- and
- wherein the adhesive has a heat resistance of at least 5° C. greater than an adhesive without the nucleator and the functionalized polypropylene wax.
8 more elements
An article comprising a substrate selected from kraft paper, chipboard or film;
- and an adhesive consisting essentially of:
- (a) from about 30 to about 99 wt % based on the total weight of the adhesive, of a polymer component which contains, in polymerized form, at least 65 wt % of propylene, based on the total weight of the polymer component;
- (b) from about 0.05 to about 1 wt %, based on the total weight of the adhesive, of at least one nucleator;
- (c) from about 0.01 to up to 5 wt %, based on the total weight of the adhesive, of at least one functionalized polypropylene wax;
- (d) from 21 to about 50 wt %, based on the total weight of the adhesive, of a tackifier, and
- (e) from 0 to about 10 wt %, based on the total weight of the adhesive, of a plasticizer, stabilizer, and/or additive;
- wherein the total weight percent of the adhesive equals to 100 weight percent and
- wherein the adhesive has a heat resistance of at least 5° C. greater than an adhesive without the nucleator and the functionalized polypropylene wax.
5 more elements
Dependencies are inferred from the claim text.